Thank you for your query,
Your child seems to have another urinary tract infection
In children with underlying kidney
anomalies like vesico ureteral reflex, abnormal ureteral insertions, there are chances of getting repeated urine infections.
Urine to be given for routine examination and culture and sensitivity to know the causative bacteria.
Further evaluation is required with Ultrasound
abdomen and MCUG (micturating cystourethrogram) to know the underlying anomalies.
Long term antibiotic prophylaxis
with antibiotics and correction of underlying structural abnormality is important to prevent further infections.
Hope I have answered your query.